EP0902268A2 - Appareil pour tester la pression - Google Patents

Appareil pour tester la pression Download PDF

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Publication number
EP0902268A2
EP0902268A2 EP98115583A EP98115583A EP0902268A2 EP 0902268 A2 EP0902268 A2 EP 0902268A2 EP 98115583 A EP98115583 A EP 98115583A EP 98115583 A EP98115583 A EP 98115583A EP 0902268 A2 EP0902268 A2 EP 0902268A2
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure tester
compressed air
camera
tester according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98115583A
Other languages
German (de)
English (en)
Other versions
EP0902268B1 (fr
EP0902268A3 (fr
Inventor
Stefan Rausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolfgang Rausch & Co Electronic-Maschinenbau GmbH
Original Assignee
Wolfgang Rausch & Co Electronic-Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7842232&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0902268(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wolfgang Rausch & Co Electronic-Maschinenbau GmbH filed Critical Wolfgang Rausch & Co Electronic-Maschinenbau GmbH
Publication of EP0902268A2 publication Critical patent/EP0902268A2/fr
Publication of EP0902268A3 publication Critical patent/EP0902268A3/fr
Application granted granted Critical
Publication of EP0902268B1 publication Critical patent/EP0902268B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/005—Investigating fluid-tightness of structures using pigs or moles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2823—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pigs or moles traveling in the pipe

Definitions

  • the invention relates to a pressure tester for internal testing of the Tightness of pipes, in particular of socket connections from Tubes, with two inflatable annular sealing cushions that over a first compressed air line in connection with a compressed air source stand and at an axial distance from each other in an essential tubular device body are attached, wherein they in the inflated state, lying against the inner wall of the tube an annular test space between the inner tube wall and limit the tubular device body, further comprising a second pressure medium line leads into the test room and an overpressure can be detected in the test room by a pressure sensor.
  • Such a pressure test device is known from US 3,400,574.
  • the pressure tester is a trolley that has a wheeled one Contains tube that forms a central flow channel, so that the pressure tester in a pipeline pressure tests can perform while the pipeline continues to operate.
  • In the front end area of the pressure tester is a camera permanently installed with which the in front of the respective test area of Pipeline lying interior is monitored so that obstacles are recognizable by which the test device could get stuck.
  • the pressure tester is pulled through the pipeline using a winch drawn.
  • Such a pressure tester is expensive and it is difficult to to position the device exactly, e.g. Socket connections of pipes to be checked for leaks, since the built-in camera only overlook the area in front of the pressure tester can.
  • the present invention is based on the object To develop pressure tester of the type under consideration so that it can be produced at lower cost and that its exact positioning at a location to be examined Pipeline, especially a socket connection, considerably is relieved.
  • this essentially exists tubular device body at least in the area between the sealing pad from a tube from a transparent Material, and the pressure tester is with a camera truck can be coupled such that a pivoting camera of the camera vehicle arranged within the transparent tubes and such is aligned that with it the area to be examined Inner pipe wall is detected.
  • the pressure test device according to the invention is therefore a relative one simply constructed additional device that can be put together if necessary with one that already exists and for numerous others Purpose camera trolley can be used, so that for Leak testing of pipes, especially socket connections, no more conventional, expensive pressure test equipment is required.
  • the transparent tube is, for example made of acrylic glass, without the invention being limited thereto.
  • the first compressed air line the compressed air to the two sealing bags feeds, preferably opens through the bottom wall of the brackets the two sealing bags.
  • the first compressed air line runs doing so inside the clear tube, which is also preferred for the second compressed air line, which is due to the transparent Pipe can open into the test room. Alternatively can also be led through the base into the test room become.
  • This pressure sensor is after another suggestion the invention attached to the camera dolly so that the Connection line to the test room is short. It brings with it themselves that the pressure sensor is very overpressure in the test room can record precisely, since only a small volume of compressed air in the short piece of hose is also measured.
  • the second compressed air line is in front of the Branch point preferably by means of an electromagnetic valve closed, because of course the Connection to the compressed air source must be interrupted.
  • An electrical line leads from the pressure sensor to the display and evaluation electronics, which is preferably in a vehicle the earth is stationed.
  • the electrical line comes with great advantage within a compressed air line, preferred arranged within the second compressed air line.
  • a compressed air line for example the electrical Glue the pipe to the outside of a compressed air pipe.
  • the two compressed air lines are also together permanently connected.
  • the pressure tester can be detached Snap connection be coupled to the camera dolly.
  • the pressure tester according to the invention requires its use no winch, which is why it is positioned from the starting shaft can be and can also be used if only one side of the testing pipeline is accessible.
  • the pressure tester is included Can be precisely positioned using the camera located inside, the entire inspection process is monitored by the camera can be. This is also a visual inspection of one to be checked Socket connection possible.
  • a double hose is preferred for supplying the test device provided with integrated control line, so that only a hose reel is required.
  • a great advantage of the invention is that the pressure tester can be adapted to existing TV systems.
  • a pressure testing device designated as a whole by 1, is thus within of pipes 2 positioned that it is the socket connection 3 one Can undergo pressure test.
  • the pressure tester 1 has a essential tubular device body 4, which is essentially from a plexiglass tube 5 and two in cross section about U-shaped annular brackets 6, which with the Plexiglass tube 5 are firmly connected.
  • the end sections the plexiglass tube 5, for example, in annular grooves Brackets 6 inserted and glued therein.
  • Sealing pads 7 are seated in the brackets 6, the side of Web 8, 9 of the brackets 6 are supported.
  • the sealing pillow 7 have only one in the unpressurized state shown small distance to the inner wall 10 of the tubes 2.
  • this overpressure is in the course of time of the Pressure sensor 16 measured, and the measured values are over a preferably arranged within the compressed air hose 19 electrical Control line to a display and evaluation electronics passed on, which are located above the ground.
  • the Both compressed air hoses 11 and 19 are up to the pressure tester 1, where they branch, firmly into a double hose connected with each other.
  • Two support arms 20 are screwed onto the front bracket 6, each holding a wheel 21 rotatably.
  • the wheels 21 are like Fig. 2 shows - arranged at an angle to each other.
  • the holding arms extend in the axial direction of the pressure tester 1, so that the wheels 21 are not under, but in front of the pressure tester 1 are located.
  • the pressure tester is with a conventional camera trolley 22 coupled, the one with 24 in total with swivel arms 23 designated circular and pan camera holds.
  • the camera 24 is located himself in the coupled state of the pressure tester 1 with the Camera carriage 22 inside the plexiglass tube 5.
  • a support structure 25 is attached to the swivel arms 23, which is screwed onto the web 8 of the rear bracket 6. As a result, the pressure testing device 1 and the camera carriage 22 form when moving through the tubes 2 one unit. On the supporting structure 25, the pressure sensor 16 is also attached.
  • the camera 24 is activated during the examination of the socket connection 3 pivoted from the position shown by 90o, so that with the video camera a visual inspection of the sleeve area during the test can be carried out.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP98115583A 1997-09-13 1998-08-19 Appareil pour tester la pression Expired - Lifetime EP0902268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19740276 1997-09-13
DE19740276A DE19740276C1 (de) 1997-09-13 1997-09-13 Druckprüfgerät

Publications (3)

Publication Number Publication Date
EP0902268A2 true EP0902268A2 (fr) 1999-03-17
EP0902268A3 EP0902268A3 (fr) 1999-11-17
EP0902268B1 EP0902268B1 (fr) 2004-03-31

Family

ID=7842232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115583A Expired - Lifetime EP0902268B1 (fr) 1997-09-13 1998-08-19 Appareil pour tester la pression

Country Status (3)

Country Link
EP (1) EP0902268B1 (fr)
AT (1) ATE263366T1 (fr)
DE (2) DE19740276C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101339110B (zh) * 2008-08-14 2010-09-22 宋玉田 管道试压机
BE1022335B1 (nl) * 2014-01-22 2016-03-16 Vliegen Nv Voegentester
CN112816153A (zh) * 2020-12-31 2021-05-18 重庆诺伯斯自动化设备有限公司 一种稳定通压可多组样本同时检测的气密测试装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007004630U1 (de) * 2007-03-29 2008-08-07 Jt-Elektronik Gmbh Prüfeinrichtung mit Positionsbestimmung in Kanalrohren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400574A (en) * 1966-10-31 1968-09-10 Harold W. Cramer Method and apparatus for testing pipelines
DE2932280A1 (de) * 1979-08-09 1981-02-26 Baumann & Burmeister Vorrichtung und verfahren zum abdruecken von rohrleitungen
US4372658A (en) * 1980-06-02 1983-02-08 Magnaflux Corporation Pipeline inspection apparatus
JPS62211537A (ja) * 1986-03-12 1987-09-17 Nippon Kokan Kk <Nkk> 輸送管の漏洩箇所検出用ビグ
GB2190722A (en) * 1986-05-20 1987-11-25 British Nuclear Fuels Plc Pipework inspection apparatus
JP2534698B2 (ja) * 1987-03-20 1996-09-18 東京電力株式会社 管内検査ピグ装置
DE9103527U1 (de) * 1991-03-22 1991-06-27 Denso-Chemie Wedekind Kg, 5090 Leverkusen Vorrichtung zum Erfassen von Fugen, Rissen o.dgl. in Abwasserleitungen
JP2544888B2 (ja) * 1993-07-28 1996-10-16 株式会社湘南合成樹脂製作所 管ライニング材の検査方法
DE4328575C2 (de) * 1993-08-25 1996-09-05 Daimler Benz Aerospace Ag Vorrichtung zur Prüfung von Hohlräumen
US5654795A (en) * 1995-06-06 1997-08-05 Crc-Evans Pipeline International, Inc. Internal visual weld inspection apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101339110B (zh) * 2008-08-14 2010-09-22 宋玉田 管道试压机
BE1022335B1 (nl) * 2014-01-22 2016-03-16 Vliegen Nv Voegentester
CN112816153A (zh) * 2020-12-31 2021-05-18 重庆诺伯斯自动化设备有限公司 一种稳定通压可多组样本同时检测的气密测试装置
CN112816153B (zh) * 2020-12-31 2023-08-11 重庆诺伯斯自动化设备有限公司 一种稳定通压可多组样本同时检测的气密测试装置

Also Published As

Publication number Publication date
EP0902268B1 (fr) 2004-03-31
ATE263366T1 (de) 2004-04-15
DE19740276C1 (de) 1999-06-17
EP0902268A3 (fr) 1999-11-17
DE59811084D1 (de) 2004-05-06

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